Tie back for curtains



July 5, 1932.

C. P. HENRY TIE BACK FOR CURTAINS Filed Aug. 26, 1931 Patented July 5, 1932 CHARLES 1?. HENRY, OF PROVIDENCE, RHODEI SLAND, ASSIGNOR T0 JAMES N. HEN RY, OF PROVIDENCE, RHODE ISLAND TIE BACK FOR CURTAINS Application filed August 26, 1931. Serial No. 559,463.

My invention relates to curtain tie backs or ornamental devices intended for fixing into window frames, door frames, or mouldings for the reception of the lower ends or portions of draped curtains or the like which rest upon or are tied around the shank of the device, and are retained between the wall and the ornamental plate or shield.

In these structures such excessive strain is brought to bear upon the ornamental plate as to ultimately cause it to become insecure, tilt, rotate, or rattle.

The essential objects of my invention are to overcome the above weakness, and to efiect this end by an inexpensive structure presenting no projections to injure the curtain and produced by a simple means.

To the above ends primarily my invention consists of such parts and combinations of parts, and of such steps and successions of steps, as fall within the scope of the appended claims.

In the accompanying drawing which forms a part of this specification,

Figure 1 is a side elevation of the tie back prior to affixing the ornamental plate,

Figure 2, a vertical section of the stud before insertion of the pin,

Figure 3, a similar fragmentary section of the same with the pin inserted,

Figure 4, a similar view of the same with the washer and the plate positioned for final engagement, the plate being shown partially broken away,

Figure 5, a similar view of the parts after the swaging operation,

Figure 6, a side elevation of the completed tie back mounted,

Figure 7 a front elevation of the same, and

Fig. 8 is a perspective View of the washer member.

Like reference characters indicate like parts throughout the views.

The method of constructing my tie back consists in forming a metallic stud 10 with a head 11 having a convex outer face 12 and a fiat inner or upper face 13. Integral with the head is a shank 16 having a portion 17 of enlarged diameter adjacent the head forming an intermediate shoulder 18. The shank has a flat end, as at 20, and is provided with a central longitudinal bore 21, all as shown in Figure 2.

A steel pin 23, having a body 24 and a point 25, is inserted in the bore 21 and fixed therein by forming with a suitable tool an annular indent 26 in the end face 20 of the shank, thereby forcing the metal of the shank tightly around the body 24 of the pin. This method of inserting the pin is not exclusive.

The head 11 of the stud is now placed in a concavity 27 of a bottom die 28, with the flat circular central portion 30 of a shield 31 resting upon the fiat upper face of the head, as shown in Figure 4. A circular aperture 32 in the center of the portion 30 of the shield allows the shank of the stud to extend therethrough as a sliding fit. A flat washer 24, which slidably fits the portion 17 of the stud, is manually placed upon the shield. The parts thus assembled are shown in Figure 4.

A tubular die 36 with a substantially flat lower face 37 has its cutting edge 38 at the junction of its lower face and inner face. 7

The internal diameter of the cutter or die 36 is that of the unenlarged portion of the shank, so that as the die descends it cuts,

compresses and depresses that part of the material of the shank portion 17 which is in excess of the diameter of the unenlarged portion to and against the washer 34, where the crushing effect of the die expands the accumulated metal upon the upper face of r the washer in the form of an annular fin 40, as shown in Figure 5. This overlapping fin cooperates with the stud head to rivet the intervening parts into extremely tight relation to themselves and to each other.

The fin 40 is so thin, being usually about fifteen thousandths of an inch in thickness, that no irregularities are presented upon the face of the washer that could catch upon any fabric engaged by the tie back.

I claim:

1. In a tie back, a stud comprising a semispherical head and a shank, a centrally apertured shield mounted through its opening upon the fiat face of the head, a washer upon the shank resting upon the shield, and an istannular fin upon the shank overlapping and tightly engaglng the Washer.

2. In a tie back, a stud comprising a head and a shank, a centrally apertured shield mounted through its opening upon the head, a Washer upon the shank resting upon the shield, and a fin upon the shank engaging the Washer.

3. In a tie back, a shank, a head upon one end of the shank, a centrally aperture shield mounted through its opening upon the shank and engaging the head, a Washer upon the shank resting against the shield, a fin upon the shank engaging the Washer, and a pin 1 in the free end of the shank.

In testimony whereof I have afiixed my signature.

CHARLES P. HENRY. 

